The album was released on November 17, 2004 under Giza Studio label.

The album includes 4 previously released singles since Nemuru Kimi no Yokogao ni Hohoemi wo till Itsuka Kokoro ni Taiyou wo.

[1] The composer of Egao de Iyouyo, Aika Ohno self-cover this single in her cover album Silent Passage.

[2] The album reached #23 rank in Oricon for first week.

It charted for 4 weeks and totally sold 20,814 copies.